JP2011060523A - Terminal, manufacturing method thereof and motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure sufficient joint strength for conducive wires adjoined in fusing processing, and to improve conduction performance by suppressing the variations in the resistances of the conductive wires. <P>SOLUTION: A terminal includes a conductive wire bundle 2, having a plurality of bound conductive wires L having insulating coatings and a terminal fixture 10 mounted on the conductive wire bundle 2 and is formed in fusing processing in which the insulating coatings of the conductive wires L are carbonized and removed and close adherence is made between the conductive wires L, by swaging the terminal fixture 10 having the conductive wire bundle 2 accommodated in a housing 12 by electrode members 5, 5 and energizing therethrough. The terminal fixture 10 includes its body section 11, having the hollow housing 12 for housing the conductive wire bundle 2, and a plate-formed rib 15 disposed in a gap to partition the plurality of conductive wires L inside the housing 12. The rib 15 has a spiral cross-sectional shape placed in a gap of cross sections of the plurality of conductive wires L inside the housing 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a terminal obtained by carbonizing an insulating coating by electrically staking a terminal tool attached to a wire bundle having an insulating coating with an electrode member, and electrically bonding the terminal tool and the conductive wire, and a manufacturing method thereof, and The present invention relates to an electric motor including the terminal.

  Conventionally, as shown in, for example, Patent Document 1, a fusing (resistance welding) process is performed in manufacturing a terminal obtained by conductively joining a terminal tool to a conductive wire having an insulating coating. In this fusing treatment, a metal terminal device attached to a conductive wire having an insulation coating is caulked with a pair of electrode members, and in this state, an electric current is passed through both electrode members to carbonize the insulation coating by heat generation of the terminal device. (Melting), thereby forming a terminal (terminal) formed by joining the terminal tool and the conducting wire in a conductive state.

  By the way, the conventional terminal tool was formed in hollow shapes, such as a cylindrical shape surrounding the outer periphery of a conducting wire bundle. Therefore, heat is transmitted from the inner wall of the terminal tool that has generated heat to the outer peripheral side surface of the conductor bundle, and the sheath of the conductor is melted. However, when the number of conductors constituting the conductor bundle is large or when the diameter of the conductor bundle is large, heat is not sufficiently transferred from the outer peripheral side surface of the conductor bundle to the inside of the cross section, and the insulation coating inside the conductor bundle is not provided. There was a possibility that it could not be sufficiently melted. Thereby, unevenness may occur in the joining between the terminal tool and each conductive wire, and there is a problem that sufficient conduction and fixing strength of the terminal cannot be secured.

  In addition, in the method of crimping the hollow terminal tool with the electrode member, the conductors in the terminal tool after crimping are not uniformly arranged, and there is a possibility that a gap is formed between the conductors. If such a gap is formed, temperature variation occurs inside the conductor bundle, and the insulation coating cannot be melted uniformly, or carbonized products (sludge) generated by carbonization of the insulation coating accumulate in the gap of the conductor. There are things to do. Thereby, there existed a problem that sufficient joining strength of conducting wire could not be secured. In addition, there is a problem that variation in resistance of each conductive wire becomes large.

JP 2003-153505 A

  The present invention has been made in view of the above points, and its purpose is to secure sufficient bonding strength of the conductors to be joined by the fusing treatment, and to improve conductive performance by suppressing resistance variation of each conductor. It is an object of the present invention to provide a terminal that can be used, a manufacturing method thereof, and an electric motor including the terminal.

  The present invention for solving the above-mentioned problems is a terminal having a conductor bundle (2) formed by bundling a plurality of conductors (L) having an insulating coating, and a housing portion (12) for housing the conductor bundle (2). The terminal (10) including the tool (10), and the terminal (10) containing the lead wire bundle (2) in the housing part (12) is squeezed with the electrode members (5, 5) to energize the conductor (L). The terminal is formed by a fusing process that removes the coating by carbonizing and closes the conductors (L), and the terminal (10) is a cylindrical main body (11) having a housing (12). And plate-like ribs (15) installed in the gaps so as to partition the plurality of conductors (L) in the accommodating portion (12), the rib (15) being a plurality of conductors (L). It is characterized by having a spiral-shaped cross-sectional shape disposed in a gap in the cross-section.

  According to the terminal according to the present invention, it is provided with plate-like ribs installed in the gaps so as to partition the cross-sections of the plurality of conductors in the accommodating portion for accommodating the conductor bundle. Since not only heat is given to the outer peripheral side surface of the wire bundle through the inner wall of the housing portion, but also heat is given to the inside of the wire bundle through the rib, Heat can be evenly distributed. Therefore, it becomes possible to carbonize the insulation coating of the conductive wire in the terminal device more effectively. Moreover, since heat can be given simultaneously to the outer periphery and the inside of the conductor bundle, it is possible to suppress the occurrence of a time difference in heating of each part of the conductor bundle. Thereby, since it can suppress that a carbonization product (sludge) remains in the clearance gap between conducting wires, the fall of the thermal conductivity between conducting wires can be prevented. By these, a conducting wire can be joined reliably. Moreover, the dispersion | variation in resistance of each conducting wire can be suppressed and the electrical conductivity of a terminal can be improved. Moreover, the cross-sectional shape of the ribs is a spiral shape that is arranged in the gaps of the cross-sections of the plurality of conductors in the accommodating part, so that the plurality of conductors in the accommodating part can be effectively distributed by the ribs while having a simple configuration. It becomes possible.

  Further, according to the present invention, when the terminal tool is caulked with the electrode member, the conductors of the conductor bundle are arranged in contact with each other in the housing portion by the inner wall of the housing portion and the plate-like rib. Become. Thereby, it can suppress that a non-uniform gap | clearance is made between conducting wires. Therefore, it is possible to more reliably join the conductive wires in the terminal tool.

  In this case, the rib (15) may have a projecting portion (16, 16) projecting in a direction in which the terminal tool (10) is caulked by the electrode members (5, 5). According to this, when the terminal tool is caulked with the electrode member, the rib is easily pushed and moved (deformed) in the caulking direction, so that the movement of the conducting wire in the housing portion is easily regulated by the rib. Further, since the ribs are easily spread on both sides (lateral direction) with respect to the caulking direction, it is possible to suppress the occurrence of a gap between the conductive wires on both sides with respect to the caulking direction. By these, it becomes possible to join the conducting wire in the accommodating part more reliably. Moreover, the dispersion | variation in resistance of each conducting wire can be suppressed, and a conductive performance can be improved.

  Moreover, this invention for solving the said subject is a conducting wire bundle (2) formed by bundling a plurality of conducting wires (L) having an insulation coating, and a hollow housing portion (12) for housing the conducting wire bundle (2). ) And a terminal tool (10) containing the conductor bundle (2) in the housing part (12) by caulking with the electrode members (5, 5) to energize the conductor ( L) is a terminal formed by a fusing process for carbonizing and removing the insulating coating and bringing the conductors (L) into close contact with each other. The terminal (10) is a cylindrical main body having a receiving portion (12). Part (11) and plate-like ribs (15) installed in the gaps so as to partition the plurality of conducting wires (L) in the accommodating part (12), the rib (15) being an accommodating part A plurality of flat plate portions (21 inserted from the inner wall (12a) of (12) into the conductor bundle (2) The plurality of flat plate portions (21) are staggered from the inner walls (12a) on both sides with respect to the direction in which the terminal tool (10) in the housing portion (12) is caulked toward the inside of the wire bundle (2). It is characterized by protruding. According to this, the movement of the conducting wire in the terminal device can be effectively suppressed. Further, since the inside of the conductor bundle can be heated evenly during the fusing treatment, the conductors can be more reliably joined. Further, since the conductor bundle can be heated not only from the outer periphery but also from the inside during the fusing treatment, the carbonized product produced by carbonizing the insulating coating can be effectively discharged from between the conductors.

  Moreover, in said terminal, the edge part (17) opposite to the front-end | tip (2a) of the conducting wire bundle (2) inserted in the accommodating part (12) in a rib (15) is the back in this accommodating part (12). It is good that it is depressed in the side. According to this, it becomes easy to perform the operation | work which accommodates the edge part of a conducting wire bundle in an accommodating part. Therefore, the operation | work which mounts | wears with a terminal tool to a conducting wire bundle can be performed now easily and rapidly.

  Further, in the above terminal, the rib (15) is a chamfered portion (19) in which the end portion (17) facing the conductor bundle (2) inserted into the accommodating portion (12) is chamfered. Good. According to this, when inserting a conducting wire bundle into an accommodating part, a rib comes to be easily inserted in the clearance gap between several conducting wires. Therefore, the operation | work which mounts | wears with a terminal tool to a conducting wire bundle can be performed now easily and rapidly. Moreover, when attaching a terminal tool to a conducting wire bundle, it can prevent that the front-end | tip of a conducting wire bundle is damaged.

  Moreover, in said terminal, you may provide a rib (15-3) as a member different from the main-body part (15) of a terminal tool (10-3). Moreover, the manufacturing method of the terminal concerning this invention is a manufacturing method of the terminal by which such a rib (15-3) is provided as a member different from the main-body part (11) of a terminal tool (10-3). The first step (ST1) for attaching the rib (15-3) to the conductor bundle (2), and the portion where the rib (15-3) of the conductor bundle (2) is attached is the terminal (10-3). The second step (ST2) to be accommodated in the accommodating portion (12) and the terminal tool (10-3) in which the conductor bundle (2) is accommodated by the electrode members (5, 5) and energized, thereby conducting the conductor ( The third step (ST3) of performing a fusing process for carbonizing and removing the insulating coating of L) and bringing the conductors (L) into close contact with each other is performed in this order.

  In this way, if the rib is provided as a member different from the main body of the terminal tool, when manufacturing the terminal, the rib is first attached to the conductor bundle, and the conductor bundle of the portion where the rib is attached is later attached. Can be accommodated in the terminal tool. According to this, compared with the case where the rib is integrally formed on the main body of the terminal device, the work of mounting the rib in the gap of the conducting wire can be easily performed, so that the terminal can be easily manufactured. Become. In addition, a plurality of conductive wires can be distributed (partitioned) in a desired state by the ribs. Therefore, according to the method for manufacturing a terminal described above, the operation of accommodating the wire bundle is facilitated, so that the terminal can be assembled efficiently in a short time.

Further, according to the present invention, the terminal device (10) attached to the coil (52, 53) formed by bundling a plurality of conductive wires (L) having an insulating coating is connected in a state in which electrical continuity is ensured by a fusing process. An electric motor (50) provided with a terminal (51, 55), wherein the terminal (51, 55) is the terminal (1) according to any one of claims 1 to 7. According to the electric motor of the present invention, the electric conductivity and durability of the terminal can be improved, so that the electric motor has high reliability.
In addition, the code | symbol in said parenthesis shows the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

  According to the terminal and the manufacturing method thereof according to the present invention, it is possible to secure sufficient bonding strength of the conductors to be joined by the fusing treatment, and to improve the conductive performance of the terminal by suppressing variation in resistance of each conductor. it can. Moreover, a highly reliable electric motor can be provided by using the terminal concerning this invention.

It is a figure which shows the terminal tool which comprises the terminal concerning 1st Embodiment of this invention, (a) is a side view, (b) is a perspective view. It is a figure which shows a terminal tool, (a) is AA arrow sectional drawing of FIG. 1, (b) is BB arrow sectional drawing of FIG. It is a figure for demonstrating the procedure which accommodates a conducting wire bundle in a terminal tool, and is a side view (partial sectional view) of a conducting wire bundle and a terminal tool. It is a figure for demonstrating a fusing process, (a) is a state before crimping a terminal tool with an electrode member, (b) is a figure which shows the state after crimping a terminal tool with an electrode member. It is a figure which shows the terminal tool which comprises the terminal concerning 2nd Embodiment of this invention, (a), (b) shows the case where a rib consists of two flat plate parts, respectively. It is a figure for demonstrating a fusing process, (a) is a state before crimping a terminal tool with an electrode member, (b) is a figure which shows the state after crimping a terminal tool with an electrode member. It is a figure which shows the terminal tool which comprises the terminal concerning 3rd Embodiment of this invention. It is a flowchart for demonstrating the manufacturing method of the terminal concerning 3rd Embodiment. It is a figure which shows the structural example of the electric motor (motor) provided with the terminal concerning 4th Embodiment of this invention, (a) is a schematic plan view, (b) is a perspective view of the stator mentioned later.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[First Embodiment]
1 and 2 are views showing a terminal tool 10 constituting the terminal 1 according to the first embodiment of the present invention. FIG. 1A is a side view, FIG. 1B is a perspective view, and FIG. 2 (a) is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 2 (b) is a cross-sectional view taken along the line BB in FIG. 3 is a side view (partially sectional view) of the conductive wire bundle 2 and the terminal tool 10 for explaining the procedure of accommodating the conductive wire bundle 2 in the terminal tool 10. FIG. 4A and 4B are diagrams for explaining the fusing process. FIG. 4A is a state before the terminal member 10 is crimped with the electrode members 5 and 5, and FIG. It is a figure which shows the state after crimping the tool.

  The terminal 1 of the present embodiment includes a conductor bundle 2 formed by bundling a plurality of conductors L having an insulating coating shown in FIG. 3 and a cylindrical terminal 10 having a hollow housing portion 12 that accommodates the conductor bundle 2. The terminal 10 attached to the conductor bundle 2 is squeezed by the electrode members 5 and 5 (see FIG. 4) to energize, thereby carbonizing and removing the insulation coating of the conductor L and bringing the conductors L into close contact with each other. It is formed by a fusing process.

  The conducting wire bundle 2 is configured by bundling a large number (several tens) of conducting wires L having an insulating coating on the surface. As the conductive wire L having an insulating coating, copper wires coated with various materials such as enameled copper wire (EW), formal copper wire (PVF), polyester copper wire (PEW), and amideimide copper wire (AIW) can be used. . On the other hand, as shown in FIGS. 1 and 2, the terminal device 10 attached to the conductor bundle 2 is a metal cylindrical member. As shown in FIG. 4A, the terminal device 10 is crushed in the width direction by sandwiching and crimping both side surfaces between the pair of electrode members 5 and 5, as shown in FIG. ing. The terminal tool 10 has a shape that is integrally provided with a substantially cylindrical main body portion 11 having a housing portion 12 and a thin plate-like rib 15 installed in the housing portion 12.

  The rib 15 has a spiral cross-sectional shape that is disposed in a gap in the cross section of the plurality of conductors L that constitute the conductor bundle 2 in the housing portion 12. That is, a curved plate-shaped first outer peripheral piece 15a that protrudes from the inner wall 12a of the accommodating portion 12 and extends along the inner wall 12a, and is folded back from the tip of the first outer peripheral piece 15a along the inner wall 12a of the accommodating portion 12. A second outer peripheral piece 15b extending symmetrically with the first outer peripheral piece 15a, and folded back from the tip of the second outer peripheral piece 15b to pass through the center of the housing portion 12 between the first outer peripheral piece 15a and the second outer peripheral piece 15b. And a flat central piece 15c extending. By these, the cross section of the rib 15 is wound from the inner wall 12a of the accommodating part 12 toward the center side.

  Further, as shown in FIG. 4, the rib 15 has projecting portions 16 and 16 projecting in the caulking direction (pressing direction) in which the terminal tool 10 is caulked by the electrode members 5 and 5. That is, one protrusion 16 provided at the intermediate position of the first outer peripheral piece 15a and the other protrusion 16 provided at the intermediate position of the second outer peripheral piece 15b are curved and protruded on both sides in the caulking direction. .

  Further, as shown in FIG. 2, the end portion 17 of the rib 15 facing the tip 2 a of the conductor bundle 2 inserted into the housing portion 12 is recessed at the back side in the housing portion 12, that is, the main body portion 11. It is arrange | positioned in the position of the back | inner side rather than the edge part 18. The end 17 of the rib 15 is a chamfered chamfer 19. The chamfering here is only required to be processed into a shape in which the tip 2a (see FIG. 3) of the conductor bundle 2 accommodated in the accommodating portion 12 is smoothly inserted without being caught by the end 17 of the rib 15. As examples, there may be mentioned a case where the cross section of the end portion 17 has a rounded shape and a case where the corner portion of the cross section of the end portion 17 is cut obliquely. Further, as shown in FIG. 2B, the end portion 17 of the central piece 15c of the rib 15 is substantially V-shaped so that the middle in the longitudinal direction is arranged on the back side in the housing portion 12 rather than on both sides. Is bent.

  Next, a method for manufacturing the terminal 1 will be described. In order to manufacture the terminal 1 by the fusing process, first, the conductor bundle 2 is accommodated in the accommodating portion 12 of the terminal tool 10. For this, as shown in FIG. 3A, the leading end 2 a of the wire bundle 2 is inserted and inserted into the accommodating portion 12 from the opening 13 at one end of the terminal tool 10. At this time, the spiral rib 15 is inserted into the gap between the conductors L. In this way, as shown in FIG. 4A, the plurality of conductive wires L in the accommodating portion 12 are distributed (partitioned) by the ribs 15.

  Here, as described above, since the end portion 17 of the rib 15 is disposed so as to be recessed toward the back side of the housing portion 12, the operation of inserting the tip 2 a of the conductor bundle 2 into the housing portion 12 is facilitated. Therefore, the operation of attaching the terminal tool 10 to the conductor bundle 2 can be performed easily and quickly.

  Further, since the chamfered portion 19 is provided at the end portion 17 of the rib 15, the rib 15 can be easily inserted into the gaps between the plurality of conductors L when the terminal tool 10 is attached to the conductor bundle 2. Also by this, the operation | work which mounts | wears with the terminal tool 10 to the conducting wire bundle 2 can be performed simply and rapidly. Moreover, when attaching the terminal tool 10 to the conducting wire bundle 2, it can prevent that the front-end | tip 2a of the conducting wire bundle 2 is damaged. In addition, the end portion 17 of the central piece 15c in the rib 15 is formed in a substantially V shape in which the middle in the longitudinal direction is recessed in the accommodating portion 12 rather than on both sides. The conducting wires L can be equally distributed and inserted.

  When the conductor bundle 2 is accommodated in the terminal tool 10 in this way, both side surfaces of the terminal tool 10 are pressed by the electrode members 5 and 5 as shown in FIG. Thereby, the main-body part 11 of the terminal tool 10 is crushed in the caulking direction. Further, the ribs 15 and the conductor bundle 2 in the accommodating portion 12 are pressed in the caulking direction. In this way, as shown in FIG. 4B, the cross section of the main body portion 11 of the terminal tool 10 becomes a substantially elliptical shape, and the rib 15 is deformed so as to spread on both sides with respect to the caulking direction. Thereby, the conducting wire L is arranged in the gap between the rib 15 and the inner wall 12a of the accommodating portion 12. In this state, the electrode members 5 and 5 are energized to carbonize (melt) the insulation coating of the lead wire L in the terminal tool 10 and eliminate it, and the terminal tool 10 and the lead wire L are conductively joined. In this way, the terminal 1 is manufactured.

  As described above, according to the terminal device 10 of the present embodiment, the plate-like ribs 15 that are installed in the gaps so as to partition the plurality of conductive wires L in the housing portion 12 are provided. At the time of processing, not only heat is given to the outer peripheral side surface of the conductor bundle 2 through the inner wall 12a of the housing portion 12, but heat is also given to the inside of the conductor bundle 2 through the rib 15, so that the terminal Heat can be evenly applied to the entire wire bundle 2 accommodated in the tool 10. Therefore, it becomes possible to carbonize the insulation coating of the conducting wire L in the housing portion 12 more effectively. Moreover, since heat can be simultaneously given to the outer periphery and the inside of the conductor bundle 2, it is possible to suppress the occurrence of a time difference in the heating of each part of the conductor bundle 2. Thereby, since it can suppress that a carbonization product (sludge) remains in the clearance gap between the conducting wires L, the thermal conductivity fall between the conducting wires L can be prevented. By these, the conducting wire L can be reliably joined. Moreover, the dispersion | variation in resistance of each conducting wire L can be suppressed, and the electroconductive performance of the terminal 1 can be improved.

  Moreover, in the terminal 1 of this embodiment, when the terminal tool 10 is crimped with the electrode members 5 and 5, each conducting wire L of the conducting wire bundle 2 is pushed apart by the inner wall 12a of the accommodating part 12 and the plate-like rib 15. Thus, the conductive wires L are arranged in close contact with each other in the accommodating portion 12. Thereby, it can suppress that the non-uniform gap | clearance between the conducting wires L is made. Therefore, it becomes possible to join the conducting wire L in the terminal tool 10 more reliably.

  Further, in the terminal 1 according to the present embodiment, the rib 15 has a spiral cross-sectional shape arranged in the gaps of the plurality of conductive wires L in the housing portion 12. Thereby, although it is a simple structure, it becomes possible to distribute the some conducting wire L in the accommodating part 12 by the rib 15 substantially equally. Therefore, since it is possible to suppress the formation of a non-uniform gap between the conducting wires L, the conducting wires L can be more uniformly adhered to each other.

  The rib 15 has projecting portions 16 and 16 projecting in a direction in which the terminal tool 10 is caulked by the electrode members 5 and 5. Thereby, when the terminal tool 10 is pressed by the electrode members 5, 5, the rib 15 is easily pushed and deformed in the caulking direction, so that the movement of the conducting wire L in the housing portion 12 can be easily regulated by the rib 15. Become. Moreover, since the rib 15 is easily pushed and spread on both sides with respect to the caulking direction, it is possible to suppress the occurrence of a gap between the conductive wires L on both sides with respect to the caulking direction. By these, it becomes possible to join the conducting wire L in the accommodating part 12 more reliably. Moreover, the dispersion | variation in the resistance of each conducting wire L can be suppressed, and a conductive performance can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the description of the second embodiment and the corresponding drawings, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted below. In addition, matters other than those described below are the same as those in the first embodiment. These points are the same for the other embodiments.

  FIG. 5 is a view showing the terminal 10-2 provided in the terminal 1-2 (see FIG. 6) according to the second embodiment of the present invention. The terminal tool 10-2 of this embodiment is inserted into the inside of the wire bundle 2 from the inner wall 12a of the accommodating portion 12 instead of the rib 15 having the spiral cross-sectional shape provided in the terminal tool 10 of the first embodiment. Other ribs 15-2 having a plurality of flat plate portions 21 (21a to 21e) to be extended are provided.

  A terminal tool 10-2 shown in FIG. 5A includes a rib 15-2 including two flat plate portions 21a and 21b. In this case, one flat plate portion 21 a is provided to extend from one end of the inner wall 12 a to the vicinity of the other end through the center of the cross section of the accommodating portion 12. The other flat plate portion 21b protrudes from the inner wall 12a facing the tip of the flat plate portion 21a, is arranged in parallel with the flat plate portion 21a at a predetermined interval, and extends to the vicinity of the other end of the inner wall 12a. Moreover, the terminal tool 10-2 shown in FIG.5 (b) is provided with the rib 15-2 which consists of the three flat plate parts 21c, 21d, and 21e. In this case, the flat plate portions 21c, 21d, and 21e protrude alternately (alternately) from opposite sides of the inner wall 12a of the accommodating portion 12, and the flat plate members 21d on both sides with respect to the central flat plate portion 21c. 21e are arranged symmetrically, and these are arranged in parallel at a predetermined interval. The central flat plate portion 21d is provided to extend from one end of the inner wall 12a to the vicinity of the other end through the center of the cross section of the housing portion 12.

  FIG. 6 is a diagram for explaining a fusing process when manufacturing the terminal 1-2 of the present embodiment, and (a) is a state before the terminal member 10-2 is caulked with the electrode members 5 and 5. FIG. (B) is a figure which shows the state after crimping the terminal tool 10-2 with the electrode members 5 and 5. FIG. In FIG. 6, the terminal 10-2 including the rib 15-2 including the three flat plate portions 21d, 21e, and 21f illustrated in FIG. 5B is illustrated as an example. Also in this embodiment, as shown to Fig.6 (a), both the side surfaces of the terminal tool 10-2 are pinched | interposed with the electrode members 5 and 5. Thereby, the main-body part 11 of the terminal tool 10-2 is crushed in the caulking direction. Further, the ribs 15-2 and the conductor bundle 2 in the housing part 12 are pressed in the caulking direction. In this way, as shown in FIG. 6B, the cross section of the main body portion 11 of the terminal tool 10-2 becomes a substantially elliptical shape, and the conducting wire L is arranged in the gap between the rib 15-2 and the inner wall 12a.

  Further, the terminal member 10-2 is caulked in a direction orthogonal to the surface of the flat rib 15 so that the three flat plate portions 21c, 21d, and 21e are along the surface along with the deformation of the main body portion 11. Move so that they are pulled toward each other. Thereby, the front-end | tip of flat plate part 21c, 21d, 21e spaces apart from the inner wall 12a of the accommodating part 12 which opposes, and those clearance gaps become large. However, here, even if the gap between the tip of the flat plate portions 21c, 21d, 21e and the inner wall 12a of the housing portion 12 is increased by arranging the three flat plate portions 21c, 21d, 21e alternately, The movement of the conducting wire L that attempts to move through the gap is suppressed by the other adjacent flat plate portions 21c, 21d, and 21e. Therefore, the movement of the conducting wire L in the housing portion 12 can be suppressed, and the conducting wires L can be evenly arranged.

  Then, as shown in FIG. 6 (b), the electrode member 5, 5 is energized with the terminal tool 10-2 squeezed and crushed, thereby carbonizing (melting) the insulation coating of the conductor L in the terminal tool 10. And the terminal tool 10 and the conductive wire L are conductively joined.

  In the terminal tool 10-2 of this embodiment, the number of the flat plate portions 21 constituting the ribs 15-2 may be changed according to the number of the conducting wires L constituting the conducting wire bundle 2. Further, if the flat plate portion 21 is arranged so as to be symmetric with respect to the cross section of the conductor bundle 2, the conductor L in the accommodating portion 12 can be evenly distributed. Therefore, the inside of the conductor bundle 2 can be heated evenly.

  As described above, in the terminal device 10-2 according to the present embodiment, the rib 15-2 includes the plurality of flat plate portions 21 (21 a to 21 e) that are inserted from the inner wall 12 a of the accommodating portion 12 into the conductor bundle 2. The plurality of flat plate portions 21 protrude alternately from the inner walls 12a on both sides with respect to the direction in which the terminal 10 in the housing portion 12 is caulked toward the inside of the wire bundle 2. Thereby, the movement of the conducting wire L in the terminal tool 10 can be suppressed, and the conducting wires L can be evenly distributed. Moreover, since the conductor bundle 2 can be heated not only from the outer periphery but also from the inside during the fusing treatment, the carbonized product (sludge) generated by carbonizing the insulating coating can be effectively discharged from between the conductors L. Therefore, the joining of the conducting wire L is possible. 5 extends in the horizontal direction (horizontal direction) orthogonal to the vertical direction from the inner walls 12a on both sides (left and right sides) with respect to the direction (vertical direction) in which the terminal tool 10 is caulked. However, if the flat plate part 21 protrudes toward the inside of the conductor bundle 2 from the inner walls 12a on both sides with respect to the direction in which the terminal tool 10 is caulked, it extends in a direction perpendicular to the caulking direction. There is no need, and it may extend in a direction inclined to some extent.

[Third Embodiment]
FIG. 7: is a figure which shows the terminal 1-3 concerning 3rd Embodiment of this invention, (a) is a side view of the terminal fixture 10-3 with which the terminal 1-3 is provided, (b) is terminal 1-. 3 is an exploded perspective view of FIG. In the present embodiment, the main body 11 and the rib 15-3 of the terminal tool 10-3 are provided as separate members. That is, the rib 15-3 included in the terminal tool 10-3 of the present embodiment has the same shape as the rib 15 included in the terminal tool 10 of the first embodiment, but is separated from the inner wall 12a of the housing portion 12, It is provided as a member different from the main body 11.

  FIG. 8 is a flowchart for explaining the terminal manufacturing method of the present embodiment. In the manufacturing method of the terminal of the present embodiment, the first step (step ST1) of attaching the rib 15-3 shown in FIG. 7 to the conductor bundle 2 and the portion where the rib 15-3 of the conductor bundle 2 is attached are the terminals. The second process (step ST2) to be accommodated in the accommodating portion 12 of the tool 10-3 and the terminal tool 10-3 in which the conductor bundle 2 is accommodated are squeezed with the electrode members 5 and 5 to energize the conductor L so as to be insulated. And the third step (step ST3) in which a fusing process is performed in which the conductors L are carbonized and the conductors L are brought into close contact with each other. In addition, when attaching the rib 15-3 to the conductor bundle 2 in step ST1, the rib 15-3 may be attached by being inserted laterally from the outer peripheral side surface of the conductor bundle 2 into the gap of the conductor L constituting the conductor bundle 2. Alternatively, the conductor bundle 2 may be inserted by being inserted in the extending direction of the conductor L from the tip 2a of the conductor bundle 2.

  In the present embodiment, the rib 15-3 of the terminal tool 10-3 is provided as a member different from the main body 11, so that when the terminal 1-3 is manufactured as described above, the conductor bundle is firstly used. 2 is attached with a rib 15-3, and the conductor bundle 2 with the rib 15-3 attached can be accommodated in the terminal 10-3 later. Thereby, since the operation | work which accommodates the conducting wire bundle 2 in the terminal fixture 10-3 becomes easy, manufacture of a terminal comes to be able to be performed efficiently in a short time. Moreover, by attaching the rib 15-3 to the conductor bundle 2 in advance, it becomes easy to adjust the arrangement and distribution state of the conductor L in the terminal 10-3. Therefore, since it is possible to suppress the formation of non-uniform gaps between the plurality of conductive wires L, it is possible to prevent the thermal conductivity of the terminals from being lowered.

[Fourth Embodiment]
FIG. 9 is a diagram illustrating a configuration example of an electric motor (motor) 50 according to the fourth embodiment of the present invention, in which (a) is a schematic plan view illustrating an entire configuration of the electric motor 50, and (b) is described later. It is a perspective view of the stator 61 to do. The electric motor 50 shown in the figure includes a cylindrical stator 61 formed by winding three-phase (U-phase, V-phase, W-phase) coils 53 (53u, 53v, 53w), and the center side of the stator 61. This is a so-called distributed winding type electric motor provided with a rotor 65 that rotates at the same time. The stator 61 is provided with a stator core 62 having a plurality of teeth 63, and a three-phase winding (coil) 53 is wound around the teeth 63 via an insulating film 64 for insulating the slots. Has been. In addition, the edge part of the coil 53 is the lead wire 52 (52u, 52v, 52w). On the other hand, the rotor 65 is a 4-pole permanent magnet type, and a plurality of permanent magnets 67 are embedded in the rotor core 66, and each permanent magnet 67 is attached so that N poles and S poles are alternately arranged. It is magnetized. In the rotor 65, a shaft (not shown) passes through a shaft hole 68 provided in the center, and the shaft is rotatably supported. Thereby, the rotor 65 is rotated by the rotating magnetic field generated in the stator 61. In addition, the rotor 65 shown to Fig.9 (a) has simplified and abbreviate | omitted one part component.

  And this electric motor 50 is provided with the terminal 1 concerning embodiment of this invention. That is, the coil 53 (53u, 53v, 53w) of the electric motor 50 includes the conductor bundle 2 formed by bundling a plurality of conductors L having an insulating coating shown in FIG. A neutral point terminal 55 provided at one end of each of the three-phase coils 53u, 53v, 53w is a terminal 1 provided with the cylindrical terminal tool 10 shown in FIG. That is, in the electric motor 50 of the present embodiment, the coil 52 is connected to one end of the coil 52 by the terminal device 10 including the cylindrical main body portion 11 having the accommodating portion 12 and the plate-like ribs 15 installed in the accommodating portion 12. A neutral point terminal 55 of each phase provided is connected. Further, the lead wire 51 provided at the other end (input side) of the coil 52 of each phase is composed of the lead wire bundle 2 formed by bundling a plurality of the lead wires L having the insulation coating shown in FIG. 1 is a terminal 1 that is caulked by a terminal tool 10 (10-2, 10-3) shown in FIG. The terminal 51 is connected to a power supply unit (not shown) for supplying power to the electric motor 50.

  As described above, according to the electric motor 50 of this embodiment, the terminal 1 according to the present invention is employed as the terminal 55 provided at the end of the coil 53 and the terminal 51 provided at the end of the lead wire 52. Yes. Thereby, the conductive performance and durability of the terminals 51 and 55 can be improved. Therefore, the electric motor 50 with high reliability is obtained.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited.

  For example, as shown in the fourth embodiment, the conductor bundle included in the terminal according to the present invention is a bundle of dozens of conductors such as a conductor bundle used as a coil of a relatively large motor mounted on a hybrid vehicle or the like. A conductor bundle is suitable, but the conductor bundle provided in the terminal according to the present invention is not particularly limited in terms of the number and thickness of the conductor as long as a plurality of conductor wires having an insulating coating are bundled.

  Moreover, the specific shape of the terminal tool 10 (10-2, 10-3) shown in each of the above-described embodiments is an example, and the terminal tool 10 may have a shape other than the cylindrical shape described above. . Further, the specific shape of the rib 15 (15-2, 15-3) is not limited to that shown in the above embodiment, and may be a shape other than a spiral shape or a flat plate shape.

  In the third embodiment, the case where the same spiral-type rib 15-3 as that of the first embodiment is provided as a rib that is a separate member from the main body of the terminal tool, but the illustration is omitted in addition to this. However, as the rib of the separate member from the main body of the terminal tool, the same plate-like rib as that of the second embodiment or a rib of another shape may be provided.

L Conductor 1, 1-2, 1-3 Terminal 2 Conductor bundle 2a Tip 5, 5 Electrode member 10, 10-2, 10-3 Terminal tool 11 Main body 12a Inner wall 12 Housing 13 Opening 15, 15-2, 15-3 rib 15a first outer peripheral piece 15b second outer peripheral piece 15c central piece 16, 16 projecting portion 17 (rib) end portion 18 (main body portion) end portion 19 chamfered portion 21 (21a to 21e) flat plate portion 50 Electric motor

Claims (8)

A conductor bundle formed by bundling a plurality of conductors having an insulation coating;
A terminal device having a hollow housing part for housing the wire bundle;
With
A terminal formed by a fusing process that carbonizes and removes the insulation coating of the conductive wire and causes the conductive wire to adhere to the conductive member by energizing the terminal member that accommodates the conductive wire bundle in the housing portion with an electrode member. Because
The terminal includes a cylindrical main body having the accommodating portion, and plate-like ribs installed in the gaps so as to partition the plurality of conductive wires in the accommodating portion,
The terminal, wherein the rib has a spiral cross-sectional shape arranged in a gap in a cross section of the plurality of conducting wires. 2. The terminal according to claim 1, wherein a cross-sectional shape of the rib includes a protruding portion that protrudes in a direction in which the terminal tool is caulked by the electrode member. A conductor bundle formed by bundling a plurality of conductors having an insulation coating;
A terminal device having a hollow housing part for housing the wire bundle;
With
A terminal formed by a fusing process that carbonizes and removes the insulation coating of the conductive wire and causes the conductive wire to adhere to the conductive member by energizing the terminal member that accommodates the conductive wire bundle in the housing portion with an electrode member. Because
The terminal includes a cylindrical main body having the accommodating portion, and plate-like ribs installed in the gaps so as to partition the plurality of conductive wires in the accommodating portion,
The rib has a plurality of flat plate portions that are inserted from the inner wall of the housing portion into the conductor bundle,
The terminal, wherein the plurality of flat plate portions protrude alternately from the inner walls on both sides with respect to a direction in which the terminal tool is caulked in the housing portion toward the inside of the wire bundle. The end portion of the rib facing the tip of the wire bundle inserted into the housing portion is disposed to be recessed toward the back side in the housing portion. Terminal. 4. The terminal according to claim 1, wherein an end portion of the rib facing the tip of the wire bundle inserted into the housing portion is a chamfered portion. 5. The terminal according to claim 1, wherein the rib is provided as a member different from the main body portion of the terminal tool. It is a manufacturing method of the terminal according to claim 6,
A first step of attaching the rib to the conductor bundle;
A second step of accommodating the portion of the conductor bundle on which the rib is mounted in the accommodating portion of the terminal;
A third step of performing a fusing process for carbonizing and removing the insulating coating of the conductive wire and causing the conductive wire to be in close contact with each other by caulking the terminal member containing the conductive wire bundle with an electrode member and energizing it. A method for manufacturing a terminal, which is performed in order. A coil formed by bundling a plurality of conductive wires having an insulating coating;
A terminal connected to the terminal device attached to the coil in a state of ensuring electrical continuity by a fusing treatment, and an electric motor comprising:
The electric terminal according to claim 1, wherein the terminal is a terminal according to claim 1.

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